So, if Apple is providing the FBI with all the information they need, why then is there any further need to force Apple to create a backdoor for hacking purposes?

Then -

"In the meantime, look for an intense PR war to keep brewing. On Tuesday, an open letter by Apple CEO Tim Cook warned customers that the FBI demand was a threat to data security and would set a dangerous precedent. Then, on Thursday, the While House tried to assuage fears by saying it only wanted to decrypt the one device, and did not want Apple to “create a new backdoor to its products.”

The thing people miss is the obvious.
Give the banana republics access to your device, and
bingo, you opened the door to hackers of all skill levels.
That same hole that gets the 'good guys' in
also lets the other side of that coin come into play.